Adjustable lifting mechanism



' E. E. EMORY; ADJUSTABLE LIATING MECHANISM.

APPLICATION FILED SEPT.27. 1919.

Patented Sept. 14,1920.

Wines-sea;

an fnvenihr:

lifted and replaced on the track, upon,the framework may be collapsedand removed to another point of operation, or laid aside until needed.

The construction of the device iscompar'atively simple, composed of fewparts, and

it is easily and cheaply made. It is selfcontained and provides for anample range of movement both as to the adjustable member?) andthemovement of the lifting sheave 11 "and its hook 10., These" parts maybethrust inwardly or, outwardly from the vertical positionto any'desireddegree, and in this manner-the dev1ce 1S capable of appli- CELtIOH tOthe work 1n vlew within a wide range of operation. v

The invention is of great utilityin connection with the" lifting andreplacement of mine cars or of any similar work having in view theprovision of a substantially adjustable supporting or foundation, frame,togetherw-ith the attached parts in the manner above described.

scribed consisting of a pair of outer parallel standards spaced apartand having at top and bottom cross connecting guiding braces, anintervening relatively movable standard having a sheave wheel at itslower portion,

a -sheave wheel having a supporting clevis secured to the upper crossbrace, a winding shaft mounted -1I1 hearings on the outer standards, acable wound thereon, passing around the lowersand upper sheave wheelsand secured to the clevis' with adepending loop, and a lifting sheavehaving ahook mounted in said loop. V 2. Lifting mechanism consisting ofa vertical two-part supporting standard, an in tervening verticallyadjustable standard coacting therewith provided with a lower sheavewheel, an upper winding crank mounted on the two-part supporting standards, a supplemental supporting and guid-,

ing sheaveand mechanism connecting it to the upper portion of thesupporting standard, and a tension exerting cable connected with thewinding shaftandpassed around zssaid lower and upper,sheaves,-andprovided' r with a terminal lifting device; V

- In combination, a verticallyadjustable [frameworkcomposed of outerstandards. and. r a ver'ftlcally ad ustable inner standard, guid- 1 mgmeans therefor, a winding shaft provided witha crank anda lockingratchet mounted on the outer standards, a sheave wheel connected withthe upper portion of the outer standard, a sheave wheel in, the lowerportion of the adjustable innerstandard, and acable connected withthewinding shaft and trained around said sheave wheels provided with aterminal sheave and ,alifting hook; I I

i 4. In, combination, a vertically ustable framework composed of outerstandards and a vertically adjustable inner'standard, guiding meanstherefor, :a winding shaft provided with a. c'ran'k and alockinglratchet mounted on. the outer. standards, a sheave wheelconnected Wlth' the upper portion of outer standard, a sheave wheel 1nthe lower portion of the, adjustable inner standard, a cable connectedwlth the wlnding shaft and trained around said sheave wheels providedwith a terminal sheaveanda lift- .ing hook, a supporting toothedratchetbar mountedon one of the outer standards, and

locking ratchet therefor; mounted on the vertically adjustable standard.

Ila-testimony whereof ;I hereunto affix my signature.

ELMEVRIE. EMORY. f

